Power drive for cream separators



C. 0. ANDERSONL POWER DRIVE FOR CREAM SEPARATORS.

APPLICATION HLED .IUgHEZi. 1918. EASQJIG,

Patented Oct. 3

Jar/aw? Qri jwnrozz/ Patented Oct. 3, 1922.

UNITEDSTATES PATENT OFFICE.

CARL OSCAR ANDERSON, or SPRINGFIELD, ILLINOIS, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO rnonnn snows-Ens, moonrona'rnn, or ornoaeo, ILLINOIS, A 003 RATION OF ILLINOIS.

rowan DRIVE roe CREAM SEPARATORS.

Application filed June 24 To all to hem it may camera Be it known that I, CARL OSCAR ANDER- SON, a citizen of the United States, residing at Springfiel'chin the county of Sangamon and State of Illinois, have invented certain new and useful Improvements in Power Drives for "Cream Separators, of which the following is a specification.

The invention has relation to driving mechanism for machines in which heavy inertia must be overcome in starting and operating, and wherein slow initial move ment is necessary, being primarily concerned with power drives for centrifugal machines, such as cream separators and the like.

Machines of the character noted are frequently driven by explosive engines wherein the power is of pulsating character, so that the machines are subjected to knocks and jerks in the en ine, incidental to its power development, viich injur-iously affects the machine and likewise the operation of the latter in the work being performed. Partic'ularly is this true in connection with cream separators, wherein slow starting is not only necessary but where uniform application of power and maintenance of speed are also required. It is the object, therefore, of the present invention to provide a power drive for these machineswhich will elimi nate transmission of the pulsations of the prime mover to the driven machine, thus freeing the latter from the shocks inherent in the irregular power generation, and. por mitting the driven machine to be operated under the uniform application of power and at such uniformity of speed as to insure the highestresults in the operation of the driven machine.

The invention further aims to provide a power drive of the character stated which is of simplified construction and minimum parts, and in which the elements are so organized and. related as to require minimum repair and little attention to the operation of the drive.

Other objects and advantages of the invention appear the'nature of the improvements is better understood, the invention consisting substantially in the novel construction, combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings, and

1918. Serial No. 241,504

finally pointed out in the appended claims. It is to be understood, however, that the present exemplification constitutes but one embodiment. of the invention, and the same is tobe considered only in an illustrative, andnot in a restrictive sense.

In the drawings Fig. 1 a top plan view of a power drive constructed in accordance with the present invention; and

Fig. 2 is a side elevation thereof.

Referring in detail to the accompanying drawing, the numeral 10 designates the usual type of shelf which is designed to he inserted between the base and stool of a cream separator. This shelf is provided at one of its ends with a projection 11 constituting the support of the hereindescribed powerl drive. This projection is in the form of a plate formed integral with the shelf 10, and the end of said projection 11 which is remote from the shelf 10 is provided with a pair of soaced perforated lugs 12 in which is mounted a shaft 13.

Mounted in the space between the lugs 12 is a swinging frame plate 1 1, said plate 1 1 having at one ofits ends a pair of spaced parallel perforated ears lfiwhich are angularly disposed with respect to the body of the plate 1 1, said ears 15 having oppositely disposed alined bearing sleeves 16. The perforated ears 15 receive the shaft 13 and are supported by the latter in the space between the lugs 12, thus providing for the swinging connecti on of the frame plate 14 with the supporting projection 11. Botatably mounted n tively. To the pulleys 19 and 20 is applied a power belt which leads from a prime mover, such as a gas engine or other form of motor. A driving belt 22 is trained over the driving pulley 18 and leads to a pulley 23 mounted on the shaft of the driven machine. When the pulley 23 is associated with a cream separator, or similar centrifugal machine, the same is applied to the worm wheel shaft 24 of suchmachine.

The end of the frame plate 14 opposite to the ears 1.5 thereof is bifurcated, as at 25-, to provide a pair of spaced parallel which is attaching lugs 26. These lugs are perforated to receive a. pin 27, and fitted to said pin 27 between the lugs 26 is the perforated lower end of tension rod The tension rod, 28ypasses upwardly through a perforation in the supporting projection 11,so that the upper end of therod 28 is disposed above the upper surface of said projection 11 and iounted on the upper end of the rod 28 so as to rest against the projection .11 isv a washer 2-9 which forms a buffer for the lower end of tension spring 30 the coils of which encircle the rod 28. The upper extremity of the latter is screw-threaded, as at l 31, an adjusting nut 82 engaging the screw threads "31, and likewise the upper end of the spring 30, the nut 32 serving as a means for ten= sioning the spring 30 as adjustment of said tension may be necessary.

A belt shifter 33, of usual construction, is

associated with the pulleys 19 and 20 the.

same being operated by a shifting-bar 3 1 v,slidably mounted in supporting loops arranged at the under face of the frame plate 14. A connecting stud 36 is carried by the bar 3 1 and fitted in a notch 37 formed in the short arm of a bell crank lever 38 which is pivotally mounted on the frame plate 14 by a bolt 39, or its equivalent. Thelong arm of the bell crank lever 38 projects at one side of the plate 14 to be conveniently grasped by the operator when it is desired to shift the Y belt 21 over the pulleys 19 and 20.

, lTand the frame plate 14, thereby allowing the :belt 22 tosliponthe pulleys 18and 23 In the use of the herein described power drive, particularly when the same is employed with a creamseparator, the same is posi tioned in operative relation to the machine when the shelf 10 is assembled with the base and stoolthereof. The power belt 21 is'applied to the pulleys l9 and 20, and the driving belt 22 likewise applied to the driv-r ing pulley 18 and the drivenpulley 23, in the manner'illustrated in Fig. 2, so that while power is derived from the prime mover, it is not a direct application of, the pov-ier to, the, driven pulley- 23, but it, is through a yieldingly mounted transmitting element which takes up the shocks and jerks incidental to. the pulsating character of the powerv developed in the gas engine. The

tension of the spring is-properly adjusted:

to impart the required tension to the driving be subjected to a shock or ar from the prime 1 mover-so that the power transmitted through the belt 22 becomes greaterv than the tension in the spring30, the spring becomes slightly compressed, under the pull of the tension rod 28 induced by the movementof the shaft to counteract the shock or jerk caused by the pulsations of the prime mover.

-While the herein described invention has been referred to in connection with the operation of centrifugal machines, and particularly cream separators, it will be apparent that the same is susceptible to use in other relations for driving purposes where it is desired to orotectthe driven machines from shocks and 'ars arising in the source of power, ,or tl which the operation of the driven machine is derived. The invention, therefore, is not to be restricted to the specific sphere of utility herein set forth. i

I claim} I a 1. In a power drive of the class described,

is driving connections from.

the combination with asupport-ing element,

of a driven pulley, a frame plate hingedly connected to said supporting element, a drivingpulley carried by said frame plate,

ing element, whereby to place the driving pulley normally under tension with respect to the driven pulley. and hold the belt under tension, said tensioning means being susceptible to shock imposed on said driving pulley ZL11Sl11g1Il,1tS driving connection, wherepulley from said shock.

2QA power drive of the class described, comprising a supporting plate, a frame plate himi edly connected thereto, a driving pulley carried by siiid "hinged plate and movable by to slacken said belt and free the driven thereby with respect to said supporting plate and also with respect to the elements driven by said drivingpulley, and a. tensioning device connected tosaid frame plate and operatively related to said supporting plate for holdinglthe driving pulley. under tension with respect to thedriven element;

3. In a power, drive of the class described, the combination with the shelf of a cream separator, ofa driving pulley, a support for said drivingpulley hingedly connected to said shelf, and a tensioningdevice pivotally connected to. said support and operatively related to said shelf for imparting tension to said driving pulleywith respect to the .elements driven thereby.

1.. In a power drive of the class: described, thecombination with the shelf of-a. cream separator, ofadriving pulley, a frame plate. fhingedly connected to said shelf,.said frame plate servingas a yielding supportfor said driving pulley, andatensioning device associated withsaid hingeplate and cooper- ..ating with said shelf for imparting tension to said driving pulley with respect to the ele-- ments driven thereby 5. A power drive of the class described, gomprising a siqiporta swinging member hingredly ronnr-icted to said support and provided with alignedbearings, a driving shaft mounted in said hearingsm tonsioning member connected to said means associated with said tensioning member and yieldably engaging; said support for maintaining the ilrivinp; shaft in. tensioned relation to the element driven. thereby, and means for regulz-iting said tensioning means. 6. A power drive of the class described, con'iprising a support, a swinging member hinn'edly connected to one end of said support and extending above and below the latter, the upper portion of said swinging member beinp provided with aligned bearings, a driving sha ft mounted in said bearings, a tensioning' member ronnected to the lower portion of said swinging member and extending; al1-ove said support, tensioning means associated with said tensioning mom her and hearing; against said support to maintain said driving shaft in tensioned relation to the element driven thereby, and means also carried by said tensioning member and rooperating with said tensioning means for regulating the degree of tension of the latter.

'7. A power drive of the class described, comprising a support, a swinging member hingedly connected to one end of said support and extending above and below the latter, the upper end of said swinging member having aligned bearings, a driving shaft arranged in said bearings, a tensioning member extending through said support and havin its lower end connected to the lower end of said swinging member, tension spring surrounding the upper end of said tension member and having one of its ends yieldably engaging said support, and means carried by said tension member and cooperating with said spring for regulating the tension of the latter.

8. power drive of the class described, comprising; a support, a frame plate hingedly connected to one end of said support, the lower end of said frame platebeing dis posed at a point beneath said. support, a driving shaft carried by said frame plate a tension rod connected to the lower end of said frame plate and extending above said support, a tension spring carried by said tension member and bearing against said support, and means also carried by said tension member and co-operating with said spring for regulating the tensionof the latter.

9. A power drive of the class described, comprising: a SllppOlihfi frame plate hingedly connected to said support and having its lower end disposed below said support, a

driving shaftcarried by said frame plate, a

swinging member,

tension :zo b ire edly connected to the lower end of'said traineplate and extending up 'wardly through said support, a tension spring associated with said tension rod and bearing against said support, and means also associated with said tension rod for regulating the tension of said spring. Y lO, power drive of the class described comprising a support, a frame plate hingedly connected to said support, the upper end of said, frame plate being provided aligned bearings, the lower end of said frame plate being disposed beneath said support, a driving shaft mounted in the bearings of said frame plate, a tension rod hingedly connected to the lower end of said frame plate and extending above said support, tensioning means associated with said tension rod and co-operating with said support for maintaining the driving shaft in tensioned relation to the element driven thereby, and means for regulating the degree of tension of said tensioning means.

11. A power drive of the class described, comprising a support, a swinging member hingedly connected to said support, the lower end of said swinging member being disposed below said Support, a driving shaft carried by the upper end of said frame member, tight and loose pulleys carried by said driving shaft belt shifting means carried by said frame member and arranged in operative relation to said tight and loose pulleys, and tensioning means connected to the lower end of said frame plate and operatively related to said support for holding said driving shaft in tensioned relation to the element driven thereby.

12. A power drive of the class described, comprising a support, a swinging member hingedly connected to said support, the lower end of said swinging member beingdisposed below said support, a driving shaft carried by the upper end of said frame member, tight and loose pulleys carried by said driving shaft, belt shifting means carried by said frame members and arranged in operative relation to said tight and loose pulleys, a tension rod hingedly connected to the lower end of said frame plate and extending above said support, a tension spring associated with said rod and bearing against said sup port, and means also carried by said rod for regulating the tension of said spring.

13. A power drive of the class described, comprising a support having a pair of perforated spaced lugs, a shaft mounted therein, a frame plate mounted on said shaft between said lugs for swinging in relation to said support, a driving shaft carried by said frame plate the lower end of the latter extending below said support, a tension rod with hingedly connected to the lower end of said frame plate and extending above said sup port, a tension sprlng associated with said frame plate and extending above said sup port, a tension spring surrounding said tension rod, a washer also carried by said tension rod and interposed between said spring and said shelf to form a buffer for said spring, and means also carried by said tension rod for regulating the tension of said spring.

CARL OSCAR ANDERSON. Witnesses:

C. D. BEESE, C. B. WUNDERLIOK. 

